{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T13:20:54Z","timestamp":1781616054084,"version":"3.54.5"},"reference-count":45,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T00:00:00Z","timestamp":1651795200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Civil Aerospace Technology","award":["D040103"],"award-info":[{"award-number":["D040103"]}]},{"name":"Civil Aerospace Technology","award":["XDA17040524"],"award-info":[{"award-number":["XDA17040524"]}]},{"name":"Civil Aerospace Technology","award":["KP-2019-05"],"award-info":[{"award-number":["KP-2019-05"]}]},{"name":"Chinese Academy of Sciences","award":["D040103"],"award-info":[{"award-number":["D040103"]}]},{"name":"Chinese Academy of Sciences","award":["XDA17040524"],"award-info":[{"award-number":["XDA17040524"]}]},{"name":"Chinese Academy of Sciences","award":["KP-2019-05"],"award-info":[{"award-number":["KP-2019-05"]}]},{"name":"CASHIPS","award":["D040103"],"award-info":[{"award-number":["D040103"]}]},{"name":"CASHIPS","award":["XDA17040524"],"award-info":[{"award-number":["XDA17040524"]}]},{"name":"CASHIPS","award":["KP-2019-05"],"award-info":[{"award-number":["KP-2019-05"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biosensors"],"abstract":"<jats:p>In this article, a non-through metal\u2013insulator\u2013metal (MIM) waveguide that can excite fivefold Fano resonances is reported. The Fano resonances are obtained by the interaction between the modes excited by the square split-ring resonator (SSRC) and the bus waveguide. After a detailed analysis of the transmission characteristics and magnetic field strength of the structure using the finite element method (FEM), it was found that the independent tuning of Fano resonance wavelength and transmittance can be achieved by adjusting the geometric parameters of SSRC. In addition, after optimizing the geometric parameters, the refractive index sensing sensitivity (S) and figure of merit (FOM) of the structure can be optimal, which are 1290.2 nm\/RIU and 3.6 \u00d7 104, respectively. Additionally, the annular cavity of the MIM waveguide structure can also be filled with biomass solution to act as a biosensor. On this basis, the structure can be produced for optical refractive index sensing in the biological, micro and nano fields.<\/jats:p>","DOI":"10.3390\/bios12050306","type":"journal-article","created":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T14:49:38Z","timestamp":1651848578000},"page":"306","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Multimode Fano Resonances Sensing Based on a Non-Through MIM Waveguide with a Square Split-Ring Resonance Cavity"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8346-1173","authenticated-orcid":false,"given":"Jianfeng","family":"Chen","sequence":"first","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"University of Science and Technology of China, Hefei 230026, China"},{"name":"Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinyu","family":"Lian","sequence":"additional","affiliation":[{"name":"School of Instrument Science and Optoelectronic Engineering, Hefei University of Technology, Hefei 230009, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Zhao","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chenbo","family":"Xie","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1866","DOI":"10.1103\/PhysRev.124.1866","article-title":"Effects of Configuration Interaction on Intensities and Phase Shifts","volume":"124","author":"Fano","year":"1961","journal-title":"Phys. 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